Missing glyphs during Devicon CDN version mismatch

Devicon utilizes a combination of CSS stylesheets and external asset files (WOFF/SVG) to render developer icons. When integrating the library via a Content Delivery Network (CDN), the CSS file must align precisely with the version of the font files being requested.

A discrepancy between the linked CSS version and the hosted asset library can result in elements that are technically present in the DOM but fail to render the intended glyph. Because these failures occur at the asset-loading level rather than through a script error, they do not trigger explicit JavaScript console exceptions.

• How can a developer programmatically detect a version mismatch between the Devicon CSS and its associated font files?
• What is the expected browser behavior when a valid CSS class is applied but the corresponding glyph is missing from the loaded font version?